/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:28:49,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:28:49,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:28:49,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:28:49,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:28:49,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:28:49,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:28:49,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:28:49,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:28:49,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:28:49,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:28:49,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:28:49,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:28:49,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:28:49,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:28:49,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:28:49,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:28:49,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:28:49,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:28:49,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:28:49,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:28:49,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:28:49,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:28:49,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:28:49,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:28:49,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:28:49,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:28:49,467 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:28:49,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:28:49,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:28:49,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:28:49,473 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:28:49,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:28:49,475 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:28:49,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:28:49,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:28:49,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:28:49,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:28:49,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:28:49,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:28:49,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:28:49,485 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 04:28:49,526 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:28:49,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:28:49,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:28:49,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:28:49,528 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:28:49,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:28:49,529 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:28:49,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:28:49,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:28:49,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:28:49,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:28:49,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:28:49,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:28:49,530 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:28:49,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:28:49,531 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:28:49,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:28:49,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:28:49,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:28:49,532 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:28:49,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:28:49,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:28:49,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:28:49,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:28:49,533 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:28:49,533 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:28:49,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:28:49,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:28:49,533 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:28:49,534 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:28:50,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:28:50,047 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:28:50,052 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:28:50,054 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:28:50,055 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:28:50,057 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label53.c [2020-09-25 04:28:50,150 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63d0a85e6/5009da0d1d1447898e0da59f95263822/FLAG6c025c832 [2020-09-25 04:28:50,825 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:28:50,826 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label53.c [2020-09-25 04:28:50,842 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63d0a85e6/5009da0d1d1447898e0da59f95263822/FLAG6c025c832 [2020-09-25 04:28:51,028 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63d0a85e6/5009da0d1d1447898e0da59f95263822 [2020-09-25 04:28:51,042 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:28:51,049 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:28:51,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:28:51,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:28:51,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:28:51,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:28:51" (1/1) ... [2020-09-25 04:28:51,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:51, skipping insertion in model container [2020-09-25 04:28:51,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:28:51" (1/1) ... [2020-09-25 04:28:51,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:28:51,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:28:51,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:28:51,594 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:28:51,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:28:51,884 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:28:51,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:51 WrapperNode [2020-09-25 04:28:51,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:28:51,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:28:51,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:28:51,887 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:28:51,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:51" (1/1) ... [2020-09-25 04:28:51,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:51" (1/1) ... [2020-09-25 04:28:51,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:51" (1/1) ... [2020-09-25 04:28:51,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:51" (1/1) ... [2020-09-25 04:28:51,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:51" (1/1) ... [2020-09-25 04:28:51,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:51" (1/1) ... [2020-09-25 04:28:51,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:51" (1/1) ... [2020-09-25 04:28:52,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:28:52,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:28:52,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:28:52,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:28:52,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:28:52,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:28:52,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:28:52,111 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:28:52,111 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:28:52,111 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:28:52,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:28:52,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:28:52,112 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:28:52,112 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:28:52,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:28:52,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:28:53,601 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:28:53,601 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:28:53,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:28:53 BoogieIcfgContainer [2020-09-25 04:28:53,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:28:53,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:28:53,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:28:53,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:28:53,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:28:51" (1/3) ... [2020-09-25 04:28:53,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:28:53, skipping insertion in model container [2020-09-25 04:28:53,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:51" (2/3) ... [2020-09-25 04:28:53,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:28:53, skipping insertion in model container [2020-09-25 04:28:53,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:28:53" (3/3) ... [2020-09-25 04:28:53,623 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label53.c [2020-09-25 04:28:53,638 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:28:53,651 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:28:53,678 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:28:53,719 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:28:53,719 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:28:53,720 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:28:53,720 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:28:53,720 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:28:53,720 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:28:53,720 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:28:53,721 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:28:53,758 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 04:28:53,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 04:28:53,784 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:53,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:28:53,787 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:53,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:53,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1669931929, now seen corresponding path program 1 times [2020-09-25 04:28:53,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:53,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400466314] [2020-09-25 04:28:53,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:54,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:54,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:55,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:55,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:55,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:56,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:58,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:59,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:59,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 04:28:59,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:28:59,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-25 04:28:59,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:59,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:59,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:28:59,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:28:59,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 04:28:59,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:28:59,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:59,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:59,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:59,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:59,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:59,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 04:28:59,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:59,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:59,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:59,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:59,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:28:59,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:59,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:59,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400466314] [2020-09-25 04:28:59,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:28:59,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:28:59,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268388938] [2020-09-25 04:28:59,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:28:59,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:59,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:28:59,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:28:59,575 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 04:29:02,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:02,405 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 04:29:02,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:29:02,407 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2020-09-25 04:29:02,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:02,450 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 04:29:02,451 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 04:29:02,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:02,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 04:29:02,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 04:29:02,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 04:29:02,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 04:29:02,651 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 164 [2020-09-25 04:29:02,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:02,653 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 04:29:02,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:29:02,653 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 04:29:02,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 04:29:02,669 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:02,669 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:29:02,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:29:02,670 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:02,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:02,670 INFO L82 PathProgramCache]: Analyzing trace with hash 591184877, now seen corresponding path program 1 times [2020-09-25 04:29:02,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:02,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120091978] [2020-09-25 04:29:02,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:02,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:02,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:03,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:03,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:04,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:04,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:06,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:06,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:06,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:07,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:07,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:07,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:07,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 04:29:07,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 04:29:07,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-09-25 04:29:07,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:07,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:07,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:07,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 04:29:07,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 04:29:07,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:29:07,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:07,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:07,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:07,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:07,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:07,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:29:07,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:07,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:07,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:07,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:07,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:07,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:07,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:29:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:07,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:07,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:07,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:29:07,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:07,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:29:07,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:07,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:07,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:07,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:07,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 04:29:07,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:08,025 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:08,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120091978] [2020-09-25 04:29:08,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:08,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:29:08,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718344000] [2020-09-25 04:29:08,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:29:08,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:08,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:29:08,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:08,030 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 04:29:10,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:10,005 INFO L93 Difference]: Finished difference Result 1757 states and 2222 transitions. [2020-09-25 04:29:10,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:29:10,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-09-25 04:29:10,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:10,013 INFO L225 Difference]: With dead ends: 1757 [2020-09-25 04:29:10,014 INFO L226 Difference]: Without dead ends: 1046 [2020-09-25 04:29:10,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:29:10,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-09-25 04:29:10,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1036. [2020-09-25 04:29:10,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-09-25 04:29:10,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1283 transitions. [2020-09-25 04:29:10,054 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1283 transitions. Word has length 182 [2020-09-25 04:29:10,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:10,056 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1283 transitions. [2020-09-25 04:29:10,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:29:10,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1283 transitions. [2020-09-25 04:29:10,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 04:29:10,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:10,063 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:29:10,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:29:10,063 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:10,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:10,064 INFO L82 PathProgramCache]: Analyzing trace with hash 156773588, now seen corresponding path program 1 times [2020-09-25 04:29:10,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:10,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402364026] [2020-09-25 04:29:10,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:10,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:10,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:10,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:11,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:14,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:14,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:14,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:15,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:15,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 04:29:15,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:29:15,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 04:29:15,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:15,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:15,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:15,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 04:29:15,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 04:29:15,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:15,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:15,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:15,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:15,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:15,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:15,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:29:15,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:15,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:15,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:15,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:15,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:15,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:15,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:29:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:15,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:15,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:15,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 04:29:15,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:15,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 04:29:15,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:15,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:15,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:15,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:15,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 04:29:15,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:15,405 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:15,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402364026] [2020-09-25 04:29:15,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:15,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:29:15,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262647767] [2020-09-25 04:29:15,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:29:15,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:15,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:29:15,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:15,467 INFO L87 Difference]: Start difference. First operand 1036 states and 1283 transitions. Second operand 5 states. [2020-09-25 04:29:17,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:17,653 INFO L93 Difference]: Finished difference Result 2668 states and 3421 transitions. [2020-09-25 04:29:17,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:29:17,656 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-09-25 04:29:17,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:17,662 INFO L225 Difference]: With dead ends: 2668 [2020-09-25 04:29:17,663 INFO L226 Difference]: Without dead ends: 973 [2020-09-25 04:29:17,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:29:17,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2020-09-25 04:29:17,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 963. [2020-09-25 04:29:17,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-09-25 04:29:17,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1177 transitions. [2020-09-25 04:29:17,721 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1177 transitions. Word has length 198 [2020-09-25 04:29:17,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:17,722 INFO L479 AbstractCegarLoop]: Abstraction has 963 states and 1177 transitions. [2020-09-25 04:29:17,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:29:17,722 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1177 transitions. [2020-09-25 04:29:17,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-09-25 04:29:17,728 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:17,738 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:29:17,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:29:17,739 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:17,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:17,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1119078680, now seen corresponding path program 1 times [2020-09-25 04:29:17,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:17,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059338650] [2020-09-25 04:29:17,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:17,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:17,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:18,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:18,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:19,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:22,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:22,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-25 04:29:22,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:29:22,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 04:29:22,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:22,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:22,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:29:22,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 04:29:22,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 04:29:22,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:22,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:22,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:22,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:22,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:22,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:22,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:29:22,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:22,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:22,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:22,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:22,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:22,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:22,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:29:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:22,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:23,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:23,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:29:23,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:23,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 04:29:23,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:23,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:23,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:23,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:23,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:29:23,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:23,187 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:23,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059338650] [2020-09-25 04:29:23,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:23,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:29:23,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853293494] [2020-09-25 04:29:23,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:29:23,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:23,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:29:23,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:29:23,190 INFO L87 Difference]: Start difference. First operand 963 states and 1177 transitions. Second operand 8 states. [2020-09-25 04:29:26,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:26,416 INFO L93 Difference]: Finished difference Result 3026 states and 3931 transitions. [2020-09-25 04:29:26,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:29:26,416 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 202 [2020-09-25 04:29:26,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:26,431 INFO L225 Difference]: With dead ends: 3026 [2020-09-25 04:29:26,431 INFO L226 Difference]: Without dead ends: 1976 [2020-09-25 04:29:26,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:29:26,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2020-09-25 04:29:26,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1924. [2020-09-25 04:29:26,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1924 states. [2020-09-25 04:29:26,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 2302 transitions. [2020-09-25 04:29:26,498 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 2302 transitions. Word has length 202 [2020-09-25 04:29:26,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:26,499 INFO L479 AbstractCegarLoop]: Abstraction has 1924 states and 2302 transitions. [2020-09-25 04:29:26,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:29:26,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 2302 transitions. [2020-09-25 04:29:26,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-25 04:29:26,516 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:26,516 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:29:26,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:29:26,517 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:26,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:26,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1463653110, now seen corresponding path program 1 times [2020-09-25 04:29:26,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:26,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32171092] [2020-09-25 04:29:26,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:26,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:26,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:26,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:26,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:27,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:30,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:30,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-25 04:29:30,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:29:30,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4215 [2020-09-25 04:29:30,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:30,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:30,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:30,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 04:29:30,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 04:29:30,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:30,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:30,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:30,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:30,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:30,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:30,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:29:30,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:30,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:30,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:30,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:30,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:30,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:29:30,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:29:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:30,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:30,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:30,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:29:30,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:30,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:29:30,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:30,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:30,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:30,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:30,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 04:29:30,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:29:30,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 04:29:30,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:30,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:31,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:31,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 04:29:31,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:31,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 04:29:31,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:31,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:31,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:31,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:29:31,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 04:29:31,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:31,112 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:29:31,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32171092] [2020-09-25 04:29:31,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:31,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:29:31,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50977100] [2020-09-25 04:29:31,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:29:31,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:31,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:29:31,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:29:31,115 INFO L87 Difference]: Start difference. First operand 1924 states and 2302 transitions. Second operand 7 states. [2020-09-25 04:29:32,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:32,277 INFO L93 Difference]: Finished difference Result 3783 states and 4553 transitions. [2020-09-25 04:29:32,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:29:32,282 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2020-09-25 04:29:32,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:32,298 INFO L225 Difference]: With dead ends: 3783 [2020-09-25 04:29:32,298 INFO L226 Difference]: Without dead ends: 1881 [2020-09-25 04:29:32,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:29:32,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2020-09-25 04:29:32,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1861. [2020-09-25 04:29:32,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1861 states. [2020-09-25 04:29:32,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 2211 transitions. [2020-09-25 04:29:32,373 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 2211 transitions. Word has length 226 [2020-09-25 04:29:32,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:32,374 INFO L479 AbstractCegarLoop]: Abstraction has 1861 states and 2211 transitions. [2020-09-25 04:29:32,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:29:32,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 2211 transitions. [2020-09-25 04:29:32,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-25 04:29:32,382 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:32,382 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:29:32,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:29:32,383 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:32,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:32,383 INFO L82 PathProgramCache]: Analyzing trace with hash -387844278, now seen corresponding path program 1 times [2020-09-25 04:29:32,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:32,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696405062] [2020-09-25 04:29:32,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:32,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:32,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:32,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:32,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:32,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:37,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:37,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-09-25 04:29:37,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:29:37,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 04:29:37,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:37,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:37,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:37,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 04:29:37,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 04:29:37,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:37,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:37,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:37,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:37,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:37,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:37,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:29:37,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:37,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:37,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:37,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:37,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:37,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:37,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:29:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:37,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:37,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:37,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:29:37,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:37,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:29:37,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:37,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:37,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:37,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:37,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 04:29:37,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:37,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 04:29:37,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:37,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:37,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:37,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 04:29:37,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:37,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 04:29:37,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:37,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:37,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:37,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:29:37,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 04:29:37,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:37,697 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:29:37,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696405062] [2020-09-25 04:29:37,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:37,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:29:37,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559907266] [2020-09-25 04:29:37,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:29:37,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:37,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:29:37,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:29:37,700 INFO L87 Difference]: Start difference. First operand 1861 states and 2211 transitions. Second operand 7 states.